MCQ
Study the given flowchart and identify $\text{K, L, M}$ and $N$ respectively.
  • A
    Carbon dioxide, nitrogen oxides, methane, sulphur dioxide.
  • Carbon monoxide, methane, sulphur dioxide, nitrogen oxides.
  • C
    Methane, carbon monoxide, carbon dioxide, sulphur dioxide.
  • D
    Sulphur dioxide, carbon monoxide, methane, nitrogen oxides.

Answer

Correct option: B.
Carbon monoxide, methane, sulphur dioxide, nitrogen oxides.
Marsh gas is methane and $\ce{CO}$ is a gas that causes breathing difficulties and even death.
The primary greenhouse gases in the Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide, and ozone.
The main chemicals in air pollution that create acid rain are sulfur dioxide and nitrogen. Acid rain usually forms high in the clouds where sulfur dioxide and nitrogen oxides react with water, oxygen, and oxidants. This mixture forms a mild solution of sulfuric acid and nitric acid.
$\mathrm{SO}_2$
$\mathrm{NO}_2$

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